He favored it and would limp a bit. Your baby's looks clean. If the groomers struggled with him, he may have pulled something, or pulled away when they were clipping his nails. Keep an eye on it, give him baby aspirin, and keep an eye on it. If he's still limping Wednesday morning, call your vet for sure and get in before the start of the holiday.
Canelo gives groomers a hard time, he hates nail trims, even if I do it. I do his a tiny bit at a time so it takes several days to trim his nails. He seems to be OK with a tiny bit at a time. I've only asked my vet's techs to clip his nails and he does good with them after trying once at Petsmart and talk about the groomers struggling with them, oh my word he was so hard headed, it was a physical challenge. You are on the right track.
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